Passive load alleviation bi-stable morphing concept

A. F. Arrieta, O. Bilgen, M. I. Friswell, P. Hagedorn

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


In wind turbines, large loads caused by fluid structure interaction leading to fatigue failure and added robustness to withstand high bending stresses on the root of blades constitute important design bottlenecks. Implementation of morphing offers a potential solution for such challenges in wind turbine blades. In this letter, a passive load alleviating bi-stable morphing concept is proposed. A bi-stable specimen designed to have different stiffness and dynamic response characteristics on each stable state is devised as a compliant structure. Passive alleviation mechanisms require no active components to achieve the load alleviation objective, resulting in lighter and simpler designs in comparison to actively morphed solutions.

Original languageEnglish (US)
Article number4739412
JournalAIP Advances
Issue number3
StatePublished - Sep 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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